PANCREATIC SOMATOSTATINOMA - HISTOLOGIC, CLINICAL, AND ANGIOGRAPHIC FEATURES

Somatostatinomas are endocrine pancreatic tumors composed of islet D cells. The selective splenic arteriogram of the somatostatinoma in our patient is the first in the literature. Of the two previously reported cases, one had angiography. Although they are not shown, selective superior mesenteric and celiac angiograms were described as showing a vascular mass in the pancreaticoduodenal arcade. The somatostatinoma in our patient was also seen angiographically as a hypervascular mass of 7.5 x 7.0 x 5.5 cm, containing neovascularity, a persistent dense tumor stain, and no arteriovenous shunting. The venous phase showed splenic vein occlusion with numerous collateral veins draining through the coronary vein into the portal vein.